Product Overview
In this project, a drilled flange beam-to-column connection (DFC) with a radial drilling pattern is modeled using the Abaqus software and its behavior under cyclic loading is investigated.
The numerical model is developed based on the experimental specimen investigated in the reference study. The connection uses a perforated beam flange to create a reduced beam section and promote plastic deformation within the drilled region.
Model Description
The model represents a drilled flange beam-to-column connection based on the configuration used in the experimental study.
In this project, the DFC1 specimen is modeled in Abaqus based on the experimental test.
The connection consists of a steel beam connected to a box-shaped column, with a drilled pattern introduced in the beam flange near the column face. The drilled flange is designed to form the reduced section and promote plastic deformation within the beam rather than at the column or connection region.
The Abaqus model is developed to investigate the structural response of the drilled flange connection when subjected to repeated cyclic loading.
Cyclic Loading
A cyclic loading is applied to the beam to investigate the behavior of the drilled flange connection under repeated loading and unloading cycles.
The loading history is defined using the Amplitude option in Abaqus according to the loading protocol used in the experimental study.
The response of the connection during the cyclic analysis is recorded and used to obtain its hysteretic behavior.
Results and Hysteresis Response
The results show that the main plastic deformation in the DFC1 connection occurs in the drilled flange region of the beam. The drilled pattern helps concentrate the plastic deformation in this region and reduces nonlinear deformation in the connection and panel zone.
This behavior helps shift the plastic response away from the CJP groove weld and the column connection region, reducing the likelihood of premature damage in these critical areas.
The panel zone also exhibited very limited shear rotation in DFC1, indicating that it remained essentially elastic. Most of the inelastic deformation and energy dissipation occurred in the plastic hinge region of the beam.
The Moment–Drift hysteresis diagram obtained from the Abaqus analysis is compared with the experimental results reported in the reference article.
This comparison allows the accuracy of the numerical model to be evaluated and shows how closely the Abaqus model reproduces the experimental hysteretic response.
Experimental Validation
The numerical results obtained from Abaqus are compared with the experimental results reported in the reference research paper.
The comparison focuses on the Moment–Drift hysteresis response of the drilled flange connection under cyclic loading.
The numerical results show good conformity with the experimental results, demonstrating that the Abaqus model can reproduce the main characteristics of the experimental response.
Key Features
- Cyclic analysis of a drilled flange connection.
- Nonlinear analysis under cyclic loading.
- Cyclic loading applied to the beam.
- Moment–Drift hysteresis response.
- Comparison with experimental results.
- Validated Abaqus numerical model.
- Complete Abaqus model files.
- Excel file for amplitude loading.
- Excel file containing numerical results.
- Reference research paper.
- Step-by-step video tutorial.
What You Will Learn
- How to model a drilled flange connection in Abaqus.
- How to define the geometry and material properties of the connection.
- How to define the interactions between the structural components.
- How to define appropriate boundary conditions for the model.
- How to apply cyclic loading to the beam.
- How to define cyclic loading using the Amplitude option in Abaqus.
- How to perform nonlinear analysis under cyclic loading.
- How to obtain a Moment–Drift hysteresis diagram.
- How to extract and process Abaqus results using Excel.
- How to compare numerical and experimental results.
Reference
This project is based on the experimental study provided in the reference research paper.
The paper is included with the project files and can be used to review the experimental setup, loading protocol, and reported results.
Project Information
Important information about this project
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